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Helix 7 #14167582 10/21/21 04:49 PM
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back water Offline OP
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Voltage at the units plug reads 12.56V
the display shows 10.23V. Lead acid battery.
why the big difference? Is the voltage adjustable in software?

Re: Helix 7 [Re: back water] #14167696 10/21/21 06:28 PM
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44 Diesel Online Content
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Are you measuring the plug voltage While it's connected to the unit with the unit turned on?

Last edited by 44 Diesel; 10/21/21 06:28 PM.
Re: Helix 7 [Re: 44 Diesel] #14167817 10/21/21 08:24 PM
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back water Offline OP
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No the power plug from the battery unplugged from the unit

Last edited by back water; 10/21/21 08:26 PM.
Re: Helix 7 [Re: back water] #14167959 10/21/21 11:21 PM
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RBDavis3591 Online Content
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From the Humminbird FAQ:

Quote
Check for Proper Voltage

Check for proper voltage to your depth sounder at the connection to the battery or at the fuse panel. This will ensure that you are getting the proper voltage to the fish finder. The operating voltage range is shown in your Operations Manual.

It is advisable to check the voltage with all of your electrical equipment running as well as with the main motor and/or trolling motor running at different speeds to insure proper amperage.

This may show an over-voltage, under-voltage or electrical interference condition.

If you have an over or under voltage condition, it may be due to an inadequate charging system on your boat. Have your boat's electrical system inspected by qualified personnel.


Also need to know:

  • Is the Helix wired to its own battery?
  • What gauge wire is the Helix connected to?
  • Have you measured the voltage under load of the power plug from the battery while unplugged from the unit?
  • Do you have another Helix or have a friend with a Helix to check voltage of both units?

Re: Helix 7 [Re: back water] #14168463 10/22/21 04:19 PM
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Wayne P. Online Content
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The unit shows LOADED VOLTAGE==using AMPS.

A voltage meter does not put a load on the circuit, so you won't see the loss due to inadequate wiring/connections.


Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI and G3, MEGA 360, RC-1
Re: Helix 7 [Re: Wayne P.] #14180322 11/03/21 05:02 PM
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back water Offline OP
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Ran a home run to unit with 14awg tinted copper. fixed problem
THANKS FOR ALL THE HELP.

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